Mitsubishi Electric MELSEC QS Series User Manual page 143

9
TROUBLESHOOTING
Yes
The switch setting of the remote
station may be incorrect.
Correct the switch setting of the
remote station.
No
Check SW009C to 009F
(installation/ parameter match
status), and modify the station
information in network
parameters accordingly.
9.2.2 When "ERR." LED on the safety master module turns ON or flashes with "RUN" LED on the safety
2
Is "POWER" LED on the remote station
ON?
Yes
Is "ERR." LED on the remote station
ON? (Is "RUN" LED OFF?)
No
Is "ERR." LED on the remote station
flashing?
No
Is "L ERR." LED on the remote
station ON?
No
Is "L ERR." LED on the remote
station flashing?
No
Is "RD" LED on the remote station
flashing?
Yes
Is "SD" LED on the remote station
flashing?
Yes
Is the link special register
SW0069 (installation status) on the
safety master module OFF?
Yes
Is there duplication in station numbers?
(Is the same station number shared by
two or more remote stations?)
No
A hardware fault of the remote station may be
probable.
Replace the remote station.
9.2 Check with LEDs (1) - at System Start-up
No
Does the supply voltage conform to
the specifications?
Yes
Use a supply voltage compliant
with the specifications.
Yes
Yes
The remote station may be faulty.
Refer to the troubleshooting of the
remote module.
Yes
3
No
4
No
Yes
Correct the station number.
No
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